Last week, it came to light that Samsung was planning to attack Apple based on the fact that its iPhone design copied Sony products—and the evidence was convincing. But now the Verge has uncovered Apple's response, which suggests there were convincing iPhone prototypes kicking around well before the Sony-esque model was dreamt up.

FWD highlights an early iPhone 4 concept design created by Apple's designer Shin Nishibori. It …
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In a document filed to the courts by Apple, the company points to a prototype device, pictured above, which was codenamed "Purple". It bears plenty of similarity to the iPhone we know, and Apple claims it predates the Sony-style device that came to light last week by months.

The Purple was, apparently, first shown off within Apple back in August 2005, and the company claims that it was what went on to become the first iPhone (see image) What's more, the court document claims that Shin Nishibori's Sony-inspired design was just "an 'enjoyable' side project". Which may well be the case! But it's for the court to decide exactly how important each design was in contributing to the iPhone that finally made it to market. If they work out where to sit in time, the court case is due to kick off first thing this morning.